Question

An alternating voltage source is connected in an $AC$ circuit whose maximum value is 170 volt. The value of potential at a phase angle of ${45}^{\circ }$will be

• A. 120.56 Volt
• B. 110.12 Volt
• C. 240 Volt
• D. zero

Answer 1

The correct option is A 120.56 Volt

value of potential at a phase angle of $\frac{\pi }{4}=170\cos \left(\pi /4\right)=120.208V$